Nintendo has today opened a full-fledged website for New Super Mario Bros. 2. As you can see, it's no longer in a teaser state.

Perhaps the most interesting addition to the site is a "Worldwide Coin Total". If you have SpotPass enabled, your coin count will be added to the overall total on the New Super Mario Bros. 2 site. Nintendo asks, "How high do you think it will go? Let's find out together!"